The ventricles are the lower chambers of the heart. The human heart has 2 ventricles, the right ventricle receives blood from the right atrium and pumps it to the lungs through the pulmonary artery. The left ventricle receives blood from the left atrium and pumps it into the circulatory system through the aorta.

The heart plays an important role in the cardiovascular system, which includes all the blood vessels that carry blood from the heart to the body, and then back to the heart. So how does blood flow through the heart?